28056311108784 has 60 divisors (see below), whose sum is σ = 89735661724176. Its totient is φ = 8016088887936.

The previous prime is 28056311108783. The next prime is 28056311108797. The reversal of 28056311108784 is 48780111365082.

28056311108784 is a `hidden beast` number, since 2 + 8 + 0 + 563 + 1 + 1 + 1 + 0 + 8 + 78 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 28056311108784.

It is not an unprimeable number, because it can be changed into a prime (28056311108783) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13916819979 + ... + 13916821994.

Almost surely, 2^{28056311108784} is an apocalyptic number.

28056311108784 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

28056311108784 is an abundant number, since it is smaller than the sum of its proper divisors (61679350615392).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28056311108784 is a wasteful number, since it uses less digits than its factorization.

28056311108784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27833641994 (or 27833641985 counting only the distinct ones).

The product of its (nonzero) digits is 2580480, while the sum is 54.

The spelling of 28056311108784 in words is "twenty-eight trillion, fifty-six billion, three hundred eleven million, one hundred eight thousand, seven hundred eighty-four".